This is a note to let you know that I've just added the patch titled
drm/amdgpu/sdma5.2: use legacy HDP flush for SDMA2/3
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-sdma5.2-use-legacy-hdp-flush-for-sdma2-3.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9792b7cc18aaa0c2acae6af5d0acf249bcb1ab0d Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Sun, 14 Apr 2024 21:20:56 -0400
Subject: drm/amdgpu/sdma5.2: use legacy HDP flush for SDMA2/3
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 9792b7cc18aaa0c2acae6af5d0acf249bcb1ab0d upstream.
This avoids a potential conflict with firmwares with the newer
HDP flush mechanism.
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
@@ -292,17 +292,21 @@ static void sdma_v5_2_ring_emit_hdp_flus
u32 ref_and_mask = 0;
const struct nbio_hdp_flush_reg *nbio_hf_reg = adev->nbio.hdp_flush_reg;
- ref_and_mask = nbio_hf_reg->ref_and_mask_sdma0 << ring->me;
+ if (ring->me > 1) {
+ amdgpu_asic_flush_hdp(adev, ring);
+ } else {
+ ref_and_mask = nbio_hf_reg->ref_and_mask_sdma0 << ring->me;
- amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_POLL_REGMEM) |
- SDMA_PKT_POLL_REGMEM_HEADER_HDP_FLUSH(1) |
- SDMA_PKT_POLL_REGMEM_HEADER_FUNC(3)); /* == */
- amdgpu_ring_write(ring, (adev->nbio.funcs->get_hdp_flush_done_offset(adev)) << 2);
- amdgpu_ring_write(ring, (adev->nbio.funcs->get_hdp_flush_req_offset(adev)) << 2);
- amdgpu_ring_write(ring, ref_and_mask); /* reference */
- amdgpu_ring_write(ring, ref_and_mask); /* mask */
- amdgpu_ring_write(ring, SDMA_PKT_POLL_REGMEM_DW5_RETRY_COUNT(0xfff) |
- SDMA_PKT_POLL_REGMEM_DW5_INTERVAL(10)); /* retry count, poll interval */
+ amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_POLL_REGMEM) |
+ SDMA_PKT_POLL_REGMEM_HEADER_HDP_FLUSH(1) |
+ SDMA_PKT_POLL_REGMEM_HEADER_FUNC(3)); /* == */
+ amdgpu_ring_write(ring, (adev->nbio.funcs->get_hdp_flush_done_offset(adev)) << 2);
+ amdgpu_ring_write(ring, (adev->nbio.funcs->get_hdp_flush_req_offset(adev)) << 2);
+ amdgpu_ring_write(ring, ref_and_mask); /* reference */
+ amdgpu_ring_write(ring, ref_and_mask); /* mask */
+ amdgpu_ring_write(ring, SDMA_PKT_POLL_REGMEM_DW5_RETRY_COUNT(0xfff) |
+ SDMA_PKT_POLL_REGMEM_DW5_INTERVAL(10)); /* retry count, poll interval */
+ }
}
/**
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-6.8/drm-amdgpu-assign-correct-bits-for-sdma-hdp-flush.patch
queue-6.8/drm-amdkfd-fix-eviction-fence-handling.patch
queue-6.8/revert-drm-amd-display-fix-usb-c-flag-update-after-e.patch
queue-6.8/drm-amdgpu-add-shared-fdinfo-stats.patch
queue-6.8/drm-amdkfd-fix-rescheduling-of-restore-worker.patch
queue-6.8/drm-amdgpu-fix-visible-vram-handling-during-faults.patch
queue-6.8/drm-amdgpu-umsch-don-t-execute-umsch-test-when-gpu-is-in-reset-suspend.patch
queue-6.8/drm-add-drm_gem_object_is_shared_for_memory_stats-he.patch
queue-6.8/drm-amdgpu-sdma5.2-use-legacy-hdp-flush-for-sdma2-3.patch
queue-6.8/drm-amdgpu-pm-remove-gpu_od-if-it-s-an-empty-directory.patch
queue-6.8/drm-amdgpu-fix-leak-when-gpu-memory-allocation-fails.patch
queue-6.8/drm-amd-display-check-dp-alt-mode-dpcs-state-via-dmu.patch
